[IN-31][Ember-OSF] Add facebookAppId to preprint-provider model

[baylee-d]

Purpose

facebook_app_id was recently added to the preprint_provider model in osf.io. We should add it to the preprint-provider model in ember-osf to use it for sharing on branded preprints.

Summary of Changes

• Added facebookAppId field to preprint-provider model

Side Effects / Testing Notes

This shouldn't affect anything other than adding a field to the model.

Ticket

https://openscience.atlassian.net/browse/IN-31

Reviewer Checklist

• meets requirements
• easy to understand
• DRY
• testable and includes test(s)
• changes described in CHANGELOG.md

[alexschiller]

lgtm 🐨